Home / 11,111.76-15,334.62-6,638.94

Finding the Fourth Proportional to 11,111.76, 15,334.62 and 6,638.94

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Solution

The fourth proportional to 11,111.76, 15,334.62 and 6,638.94 is: 9,161.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,111.76 : 15,334.62 = 6,638.94 : x
  2. Step 2: Convert to fraction form
    11,111.76/15,334.62 = 6,638.94/x
  3. Step 3: Cross multiply
    11,111.76x = 15,334.62 × 6,638.94
  4. Step 4: Simplify right side
    11,111.76x = 101,805,622.10
  5. Step 5: Solve for x
    x = 101,805,622.10/11,111.76
  6. Step 6: Final answer
    x = 9,161.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.